7641752189 has 2 divisors, whose sum is σ = 7641752190. Its totient is φ = 7641752188.

The previous prime is 7641752143. The next prime is 7641752197. The reversal of 7641752189 is 9812571467.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7143123289 + 498628900 = 84517^2 + 22330^2 .

It is a cyclic number.

It is not a de Polignac number, because 7641752189 - 2²⁰ = 7640703613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7641752089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820876094 + 3820876095.

It is an arithmetic number, because the mean of its divisors is an integer number (3820876095).

Almost surely, 2^7641752189 is an apocalyptic number.

It is an amenable number.

7641752189 is a deficient number, since it is larger than the sum of its proper divisors (1).

7641752189 is an equidigital number, since it uses as much as digits as its factorization.

7641752189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 50.

The square root of 7641752189 is about 87417.1161100616. The cubic root of 7641752189 is about 1969.6889567927.

The spelling of 7641752189 in words is "seven billion, six hundred forty-one million, seven hundred fifty-two thousand, one hundred eighty-nine".